DE69208377T2 - TWO-STAGE EXHAUST CATALYST SYSTEM - Google Patents
TWO-STAGE EXHAUST CATALYST SYSTEMInfo
- Publication number
- DE69208377T2 DE69208377T2 DE69208377T DE69208377T DE69208377T2 DE 69208377 T2 DE69208377 T2 DE 69208377T2 DE 69208377 T DE69208377 T DE 69208377T DE 69208377 T DE69208377 T DE 69208377T DE 69208377 T2 DE69208377 T2 DE 69208377T2
- Authority
- DE
- Germany
- Prior art keywords
- catalyst system
- exhaust catalyst
- stage exhaust
- stage
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/061—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing metallic elements added to the zeolite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/208—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1025—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2063—Lanthanum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20753—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20761—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/50—Zeolites
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75353791A | 1991-09-03 | 1991-09-03 | |
PCT/EP1992/001882 WO1993004767A1 (en) | 1991-09-03 | 1992-08-18 | Two-stage exhaust gas conversion catalyst system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69208377D1 DE69208377D1 (en) | 1996-03-28 |
DE69208377T2 true DE69208377T2 (en) | 1996-06-20 |
Family
ID=25031060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69208377T Expired - Fee Related DE69208377T2 (en) | 1991-09-03 | 1992-08-18 | TWO-STAGE EXHAUST CATALYST SYSTEM |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0641245B1 (en) |
JP (1) | JPH06509983A (en) |
CA (1) | CA2115040A1 (en) |
DE (1) | DE69208377T2 (en) |
MX (1) | MX9204701A (en) |
WO (1) | WO1993004767A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5741467A (en) * | 1995-06-07 | 1998-04-21 | Asec Manufacturing | Palladium catalyst washcoat supports for improved methane oxidation in natural gas automotive emission catalysts |
GB9705010D0 (en) * | 1997-03-10 | 1997-04-30 | Johnson Matthey Plc | Improvements in emissions control systems |
DE60122243T2 (en) | 2000-06-28 | 2007-06-28 | Ict Co. Ltd. | purifying catalyst |
JP5691779B2 (en) * | 2010-12-07 | 2015-04-01 | 株式会社デンソー | Exhaust gas purification device |
JP5828276B2 (en) * | 2010-12-27 | 2015-12-02 | 三菱樹脂株式会社 | Nitrogen oxide purification catalyst |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4297328A (en) * | 1979-09-28 | 1981-10-27 | Union Carbide Corporation | Three-way catalytic process for gaseous streams |
JP2732614B2 (en) * | 1988-10-18 | 1998-03-30 | バブコツク日立株式会社 | Exhaust gas purification catalyst and exhaust gas purification method |
US5024981A (en) * | 1989-04-20 | 1991-06-18 | Engelhard Corporation | Staged metal-promoted zeolite catalysts and method for catalytic reduction of nitrogen oxides using the same |
-
1992
- 1992-08-13 MX MX9204701A patent/MX9204701A/en unknown
- 1992-08-18 EP EP92917754A patent/EP0641245B1/en not_active Expired - Lifetime
- 1992-08-18 DE DE69208377T patent/DE69208377T2/en not_active Expired - Fee Related
- 1992-08-18 JP JP5504873A patent/JPH06509983A/en active Pending
- 1992-08-18 WO PCT/EP1992/001882 patent/WO1993004767A1/en active IP Right Grant
- 1992-08-18 CA CA002115040A patent/CA2115040A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JPH06509983A (en) | 1994-11-10 |
DE69208377D1 (en) | 1996-03-28 |
WO1993004767A1 (en) | 1993-03-18 |
MX9204701A (en) | 1993-03-01 |
EP0641245B1 (en) | 1996-02-14 |
CA2115040A1 (en) | 1993-03-18 |
EP0641245A1 (en) | 1995-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8320 | Willingness to grant licences declared (paragraph 23) | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |